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8321025: Enable Neoverse N1 optimizations for Neoverse V2 #33

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merged 1 commit into from
Dec 13, 2023
Merged

8321025: Enable Neoverse N1 optimizations for Neoverse V2 #33

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7 changes: 3 additions & 4 deletions src/hotspot/cpu/aarch64/vm_version_aarch64.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -205,10 +205,9 @@ void VM_Version::initialize() {
}
}

// Neoverse N1, N2 and V1
if (_cpu == CPU_ARM && ((_model == 0xd0c || _model2 == 0xd0c)
|| (_model == 0xd49 || _model2 == 0xd49)
|| (_model == 0xd40 || _model2 == 0xd40))) {
// Neoverse N1, N2, V1, V2
if (_cpu == CPU_ARM && (model_is(0xd0c) || model_is(0xd49) ||
model_is(0xd40) || model_is(0xd4f))) {
if (FLAG_IS_DEFAULT(UseSIMDForMemoryOps)) {
FLAG_SET_DEFAULT(UseSIMDForMemoryOps, true);
}
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4 changes: 4 additions & 0 deletions src/hotspot/cpu/aarch64/vm_version_aarch64.hpp
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Original file line number Diff line number Diff line change
Expand Up @@ -151,6 +151,10 @@ enum Ampere_CPU_Model {
static int cpu_variant() { return _variant; }
static int cpu_revision() { return _revision; }

static bool model_is(int cpu_model) {
return _model == cpu_model || _model2 == cpu_model;
}

static bool is_zva_enabled() { return 0 <= _zva_length; }
static int zva_length() {
assert(is_zva_enabled(), "ZVA not available");
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